14．聽下面一段材料，回答16～18題．
16．Why did Peter call Laura？
A．He wanted to invite her to thefootball game．
B．He wanted to know whether she could get a ticket for him．
C．He didn't know how to get tothe stadium．
17．What advice did Laura give Peter？
A．To set off early． B．To buy his tickets at once． C．To watch TV at home．
18．How did Laura know there would be many peopleat the stadium？
A．She watched the TV news． B．She heard of it from a friend of hers． C．She just guessed so．
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